Head motion for looms



Aug. 23, 1932. w. M. WATTIE HEAD MOTION FOR LOOMS Filed Dec. 22, 1930 2, Sheets-Sheet 1 zfar Aug. 23, 1932. w. 1 1,873,516

HEAD MOTION FOR LOOMS Filed Dec. 22. 1930 2 Sheets-Sheet 2 l z k Patented Aug. 23v, 1 932 WITEDSTATBS PATENT Q cEyJ WILLIAM M. WATTIE, or WORCESTER,- MASSACHUSETTS, AssrGNoR T oRoMP'roN a KNOWLES LOOM WoRKs, or WORCESTER, MhssAcH sEr'rs, A," CORPORATION or massacnusn'r'rs HEAD vro'rion roR Looms if Application filed December 22 1930L-"Sefla1 No. 503,919.

This invention relates to improvements in head motions for looms and it is the gel firal object of the invention to improve the con.-

struction and operationof the so calledlock knife for the vibrator levers ofa Knowles "loom. 7 The so-called Knowlesloom employs a harness mechanism provided with two spaced continuously rotating mutilated cylinder 1 gears between which lie a series of vibrator levers the position of which is determined by a pattern chain. When the vibrator lever is raised by the chain it engages the top cylinder and any tendency of the vibrator gear to move out of mesh with it is resisted byrthe chain. When the vibrator gear is in mesh with the lower cylinder, however, the upward thrust from that cylinder cannot be resisted by the chain and it is necessary to provide some form of lock to hold the levers when they are in down position. Inasmuch ascertain vibrators are up and others are down on each pick of the loom it is necessary to apply the lock on every loom beat. When making a pick-out to correct a mispick the sequence of movements of the harnesses for the immediately preceding picks must be reversed and this is conveniently accomplished by means of are'verse gearing interposed between the bottom cylinder and the drive for the pattern chain cylinder.

As heretofore made the lock knife has been Y actuated from a cam mounted on the shaft of the lower cylinder but because of the proximity of the latter to the reverse gearing there has been very little. room for the cam and the latter had consequently been made very small. Also, in previousconstructions, the arm which'engages the cam was mounted directly. on the shaft to which the lock knife supporting arms were secured and the only means of varying the amount of movement of the lock knife was to vary the length of the cam engaging arm. In view of the fact, however, that the distance between the centers of the lower cylinder and the rod tram cam U is animportant object: of my, present invention to provide a control knife including a lever which has'always the same amount of angular movement and to 1ntroduce .COIlIlQQtlQIlSbBtWQQlIthlS lever and the 7 look knifeproper, whereby the latter maybe given as much movement of the lever aswis desired. In this connection it is, also desi able to adjust theangular position of the. cam with respect to the cylinder gears so as to vary the time relation between the ilpck knife and the movements of the vibrator levers; These results I accomplish by.placingthe cam on the shaft of the top cylinder] which is sufficiently removed from; the reverse,- gearing to permit theuse ofan intermediate.

connector, and also permits the use of a larger cam wl lch hias mcreased wearing properties lVith these and other objects in view which I will appear as thedescription proceeds, my

invention resides inthe'combination and arset forth in the claims. V In the accompanying drawings, wherein a convenient embodiment of my. invention is, setforth,"

Fig. 1 is a front elevation of a head having my invention applied thereto, Fig. 2 is a parti 1 detail] plan view taken in the directionof arrow 2, Fig. 1, p u 1 Fig.3 is a detailed vertical section on line 3-3 of Fig.2, and

Fig.3. U

I Referring to Fig.1, 1- have shown a loom arch or head frame 10 in which is mounted for rotation in opposite directions upper and lowermutilated cylinder gears 11 and-12, re

spectively. A fixed heel pin 13 providespivotal support for vibrator levers 14;. y The position of the latter is determined by the pat- -rangement ofpa'rts hereinafter described and Fig. a is a vertical section on line -4 of Y tern mechanism 15'which is driven by approe priate connection not shown from the-lower cylinder. A reverse gearing designated geng erally at 16 includes a stud 17 which is 'atsubstantially the same distance from the shaft .18 of the pattern'cylinder as is the axis of i the lower cylinder 12. ]The purpose of this relation is to permit meshing of the pattern cylinder driving gear not shown with the reverse gearing. r a

inc

V V vibrator gears which extend tothe-right. of the comb 22.

iextendsin a direction parallel to theaxisof the cylinders and "has a left handedge' to Each vibrator lever has rotatably mounted .thereon'a vibrator gear l9 attached to a connector the right hand end of which as set forth in Fig. 1 may be connected to a harness jack or lever 21. The vibrator levers have their inner or right ends as shown' in Fig.1

extended through a'guide comb 22 fixed with respect to the loom frame. A lock knife 28 cooperate with the reduced portions of the The lock knife may be mounted on a pair of arms 24 adj ustablyco'nnected V longitudinally and angularlyyon a rock tateso-asto present a different bar under-the;

vibratorlevels each pick'of the loom so as to determine the relation of the various vibratorg'ears with respecttothe cylinders. f Just prior to the engagement of the cylinders withthe vibrator gears the lock knife 23 is moved to'the position shown in Fig; leso asto prevent improper vertical-"'movement of thelevers' A'co-ilspring 26'may be interposed between the lock knife frameand a fixed part of the loom and holds-the lock-knife yieldingly in looking levers.- 1

position'with respect to the The matter thus far described forms no part of my present invention and is the well known Knowles head. I

I Inca'rrying my improvements intoeffect I secure a short arm 40 to rock pin 25 by means of a setscrew 41 which enables the angularrelationof the arm to be varied with respect to the lock knife frame." IPivotally= connected to and extending upwardly from the arm mounted therein an anti-friction roller '47 is a link or rod 42 the upper end of which is connected by means of a stud 48"t0' another lever 44. A slot in this-last named lever alfords adjustment for the" stud 43 toward and from the pivotal mounting 46, the latter being fixed with respect to the loom frame.

The free end of the lever '44 has rotatably which lies over a" cam 48. The latter is secured by'm'eans of-two set screws 49 to the shaft5O forming part of the top cylinder 11.

The usual hand wheel- 51 may have its hub 52 closely adjacent the cam 48. The eamhas lowland high dwells 53 and 54, respectively, which are connected'by inclined surfaces 55;

In "operation, continued rotation of the top shaft will cause the cam to rock the lever 44 periodically in a vertical plane. By means 'oflink 42 the arm 40 and therefore the lock knife Willmove'in timed relation with the 'movements of thecylinders. It is to be understoodthat both cylinders are geared together and: perform a complete operationin the same periodof timing.

The lever 44 will always ris at precisely the same time'with respect to the position of thetop cylinder regardless of the position of the stud 43, so long as cam 48 remains unchanged. Likewise, if it be desired to change the cam so that the time of the movement of the lock knife may be varied with respect to the rotary movementfof the cylindersjsuch an adj ustmentjcan be made without varyingthe extent of movement of the lock kni 3 1 s haveprovided a control.{fortlfdlock knife of' a Knowles loom stranged that the amount ofmovement of the lock knife and the 13111163 of its movement with respect to the time of the head can be varied independently of each other. Furthermore,th e cam' can be made-"larger than those heretofore e111 ployed because of-the fact that it ison the topshaft and remove'd from the "reversing;- t

Having thus described my invention itwill 85 mechanism 16. r i a thejforegoing be-seenthatchangesand modifications may be made thereinby those; skilled in the :art' without departing from the spirit and scope" of the invention and I do not wish to be limited to the details hereindis'clo'sed, but

what I claimi's: a

gether with vibrator levers between the -cylinders, a cam rotating with the upper cylinder, a lever havingregular'movements derived from the cam, a second lever, connections between the levers, and-'alock knife operatively connected to theIsecond'lev'er and movable regularly in timed relation to "-the cylinders to lock the vibrator levers. Y 2. In a head motion" for looms, upper and lower rotating actuator cylindersg'eaied to gether, a cam rotating with one 'cylinde'n'a lever deriving movement sreg ularly from the cam, reverse gearingconnected to -the other cylinder, a second lever, a link between" the levers connected adj ustably to one of the levers, and a lock knifeconnected to-the second-lever and movable in timed relation In ahead-'motionfor looms'having upperg-r and lower actuating cylinders and areverse' gearing connected with the lower cylinder to--' 5" between the l'eversconnectedf adjustably-to' one of the levers, and a lockknifeconnected to the second lever and movablei'n timed relatively to the actuator cylinder butca'pable of assuming anyone of 3 positions relatively thereto.

" 4, In a loom head Imotionhaving n r lower rotating actuators geared together plurality of'angular relation and regularly 'with respect to the 1 actuator. "cylinder, thecam' normally fixed with a vibrator lever located between them, a locking device for the lever, reverse gearing connected to one actuator, means rotating with the other actuator to vary the'time of movement of the lock knife with respect to the rotative position of the actuators, and mechanism independent of said means to vary the extent of movement of the lock knife.

5. In a loom head motion having upper and lower oppositely rotating actuators with a vibrator lever located between them, a looking devicefor the'lever, reverse gearing connected to one actuator, means rotating with the other actuator to vary the time of movement of the lock knife with respect to the rotative position of the actuators, and means to maintain the same degree of movement of the lock knife. irrespective of the said time 7 relation.

6. In a loom head motion having upper and I lower oppositely rotating actuators, a cylinder and vibrator lever to cooperate there with, a lock device for the lever, reverse gearing connected to one cylinder-and means moving with the other cylinder to vary the extent and also the time of movement of the locking device, the extent of the movement being independent of the time of the movement. 7 I

7. In a loom head motion having a rotating actuator cylinder and vibrator lever to cooperate therewith, a lock device for the lever, a cam movable with the cylinder, a pivoted lever to cooperate with the cam and move therewith as the cylinder rotates, a link capable of attachment to thepivoted lever at any one of a plurality of positions relatively to the pivot of the lever, and a lever interposed between the link and the lock device to transmit movement to the latter derived from the link, the time of movement of the first named lever being independent of the extent of movement of the link.

8. In a head motion for looms having upper and lower oppositely rotating actuator cylinders geared together and a vibrator lever located between the gear, a lock knife for the vibrator lever, a supporting lever for the lock knife pivoted adjacent the axis of one of the cylinders, reverse mechanism carried by the said one cylinder, a cam carried by the other cylinder and operating connections between the cam and the supporting lever to rock the-latter periodically as the cylinders rotate.

In testimony whereof I have hereunto affixed my signature.

WILLIAM M. WATTIE. 

